1 Corinthians 11:25-29

25In the same way, he took the cup of wine after supper, saying, “This cup is the new covenant between God and his people—an agreement confirmed with my blood. Do this in remembrance of me as often as you drink it.”

26For every time you eat this bread and drink this cup, you are announcing the Lord’s death until he comes again.

27So anyone who eats this bread or drinks this cup of the Lord unworthily is guilty of sinning against the body and blood of the Lord.

28That is why you should examine yourself before eating the bread and drinking the cup.

29For if you eat the bread or drink the cup without honoring the body of Christ, you are eating and drinking God’s judgment upon yourself.